This document discusses fiber optic communication and summarizes the key points in the presentation. It describes the construction of optical fibers using a core, cladding, and buffer coating. It explains how total internal reflection allows light to be transmitted along the fiber. The document contrasts single mode and multi mode fiber configurations and stepped index versus graded index fibers. It lists advantages of optical fibers like high bandwidth, low signal degradation, and safety. Finally, it provides examples of fiber optic applications in telecommunications, medicine, aviation, and electronics.

1. C B KORE POLYTECHNIC CHIKODI
Topic : FIBER OPTIC COMMUNICATION
BY: SHARVANI MUSANDI
VI sem EC
VANDANA DESAI
VI sem EC

2. BRIEF FLOW OF THE PRESENTATION
1. Introduction
2. Construction of optical fiber
3. Working principle
4. Fiber optic configuration
5. Working of optical fiber
6. Advantages of Optical fiber
7. Application of fiber optics
8. Reference

3. OPTICAL FIBER
CAUSES FOR THE CREATION OF THE OPTICAL FIBER-----
Man’s HUNGER
 Lastly optical fiber’s were invented to satisfy the Man’s hunger
for communication

4. CONSTRUCTION OF OPTICAL
FIBER
 Core
 Cladding
 Buffer coating

5. TOTAL INTERNAL REFLECTION
When light travelling in an optically
dense medium hits a boundary at an angle
larger than the "critical angle" for the
media, the light will be completely
reflected. This is called total internal
reflection.
Fiber optic cables use total internal
reflection inside the optical fiber.

6. TOTAL INTERNAL REFLECTION

7. FIBRE OPTIC CONFIGURATION
SINGLE MODE AND MULTI MODE
OPTICAL FIBER

8. STEP INDEX FIBER
 The refractive index of core is constant
 The refractive index of cladding is constant
 The refractive index of cladding is slightly
lower than that of core

9. GRADED INDEX FIBER
 Refractive index of core decreases smoothly
from the centre to the outer edge
 Refractive index of cladding is constant

11. WORKING OF OPTICAL FIBER
Light Transmission

12. ADVANTAGES
 Much higher bandwidth
 Thousands of channels can be multiplexed together over one strand of fiber
 Less expensive
 Higher carrying capacity
 Less signal degradation
 Light signals
 Digital signals
 Safety
 Non-flammable
 Lightweight
 Flexible

13. ADVANTAGES
The optical fiber has
following advantages over
twisted -pair and coaxial
cable.
• Resistance to noise
• Huge bandwidth
• Higher signal carrying
capacity

14. APPLICATIONS
• Medical
• Military
• Electronics
IBM microprocessors